Match each term with the correct definition,
semiconductor
a material that has zero resistance at
a very low temperature
superconductor
a material through which little electric
current moves
conductor
a material through which electric
current flows easily
insulator
a material that conducts electricity
but not as well as a conductor

Semiconductor: a material that conducts electricity, but not as well as a conductor. Superconductor: a material that has zero resistance at a very low temperature. Conductor: A material through which electric current flows easily. Insulator: a material through which little electric current moves.

Explanation: A conductor is a material or a substance that easily conducts electricity. It allows electrons to flow easily from atom to atom; like humans, animals, and metals. A semiconductor is a material that has a level of conduction between a conductor and an insulator, such as the silicon. A superconductor has a high resistance to very low temperatures, such as aluminum. And an insulator has a very low capacity to conduct compared to other conductors, such as glass or porcelain.

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.